Question 1

How do I compare two images side by side?

Accepted Answer

Upload your two images using the left and right upload areas. The tool offers a slider (swipe) mode where you drag a divider to reveal each image, and a side-by-side mode showing both images simultaneously. Use the slider mode for subtle differences and side-by-side for overall composition comparisons.

Question 2

Do the two images need to be the same size?

Accepted Answer

No, but for the best comparison experience they should ideally be the same dimensions. If the images differ in size, the tool may scale or pad them to align. For a fair before/after comparison — for example, comparing a photo before and after editing — make sure you export both at the same pixel dimensions.

Question 3

What is the difference between slider mode and side-by-side mode?

Accepted Answer

Slider (swipe) mode overlays both images and lets you drag a divider to reveal more of one or the other. It's excellent for spotting pixel-level differences in the same-subject photos. Side-by-side mode displays the images next to each other at equal size, which is better for overall composition, style, or color grade comparisons.

Question 4

Can I zoom in while comparing images?

Accepted Answer

Yes. Most comparison tools support pinch-to-zoom or scroll-to-zoom so you can examine fine details. When zoomed in, you can pan both images together (linked panning) so you're always looking at the same area in both images simultaneously.

Question 5

Is this tool useful for comparing design mockups?

Accepted Answer

Absolutely. Upload the original design and the revised version (or the screenshot vs. mockup) to compare pixel-perfect alignment, color differences, spacing changes, or typographic edits. The slider mode is especially effective for catching subtle changes that are hard to spot when switching between tabs.

Image Comparison Slider

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